「Kooka, Kouoka」(こおか / こうおか)さんの名字の由来、語源、分布。

① Aomori-ken San'nohe-gun San'nohe-machi Originated by Kawabori Sakai (Saaka Nozawa). It is distributed in the same place.

② Topography . From the edge of the border. Nagano-ken Komagane-shi Ako is based. Iwate-ken Ichinoseki-shi The inside of the castle was in the Edo era in the Ichinoseki clan of the clan office.

2020年 9月 19日更新

Fukuoka-ken . Fukuoka-ken Origin of Sasuguri town, Kasaya-gun. A place name with a record since the Muromachi period.

2021年 7月 23日更新

Whole Japan		Prefectures
レベル	3	1　Hyougo-ken(About 130) 2　Oosaka-fu(About 20) 3　Kyouto-fu(About 20) 4　Shizuoka-ken(Very rare) 4　Hiroshima-ken(Very rare)
Population	About 200
Ranking	23,000

Rank by city
1　Toyooka-shi(About 100) 2　Kyouto-shi Minami-ku(About 10) 2　Daitou-shi(About 10) 2　Asago-shi(About 10) 2　Himeji-shi(About 10) 6　Kyouto-shi Sakyou-ku(Very rare) 6　Kyouto-shi Fushimi-ku(Very rare) 6　Fukuroi-shi(Very rare) 6　Takatsuki-shi(Very rare) 6　Kadoma-shi(Very rare)

Rank by subregion
1　兵庫県豊岡市金剛寺(About 30) 2　兵庫県豊岡市中央町(About 10) 2　兵庫県豊岡市城南町(About 10)

Etymology and distribution of 幸岡.